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=============================================================================
FreeBSD-EN-23:07.mpr                                            Errata Notice
                                                          The FreeBSD Project

Topic:          mpr(4) may fail to initialize devices

Category:       core
Module:         mpr
Announced:      2023-06-21
Affects:        All supported versions of FreeBSD.
Corrected:      2023-05-02 12:21:35 UTC (stable/13, 13.2-STABLE)
                2023-06-21 05:06:39 UTC (releng/13.2, 13.2-RELEASE-p1)
                2023-06-21 05:07:50 UTC (releng/13.1, 13.1-RELEASE-p8)
                2023-05-02 12:21:26 UTC (stable/12, 12.4-STABLE)
                2023-06-21 05:43:37 UTC (releng/12.4, 12.4-RELEASE-p3)

I.   Background

mpr(4) is a driver for Broadcom SAS controllers.

II.  Problem Description

The mpr(4) driver did not correctly initialize command data sent to the
controller when attaching.

III. Impact

mpr(4) would fail to initialize the controller in some cases, making the
attached storage devices inaccessible.

IV.  Workaround

No workaround is available.

V.   Solution

Upgrade your system to a supported FreeBSD stable or release / security
branch (releng) dated after the correction date and reboot.

Perform one of the following:

1) To update your system via a binary patch:

Systems running a RELEASE version of FreeBSD on the amd64, i386, or
(on FreeBSD 13 and later) arm64 platforms can be updated via the
freebsd-update(8) utility:

# freebsd-update fetch
# freebsd-update install
# shutdown -r +10min "Rebooting for an erratum update"

2) To update your system via a source code patch:

The following patches have been verified to apply to the applicable
FreeBSD release branches.

a) Download the relevant patch from the location below, and verify the
detached PGP signature using your PGP utility.

# fetch https://security.FreeBSD.org/patches/EN-23:07/mpr.patch
# fetch https://security.FreeBSD.org/patches/EN-23:07/mpr.patch.asc
# gpg --verify mpr.patch.asc

b) Apply the patch.  Execute the following commands as root:

# cd /usr/src
# patch < /path/to/patch

c) Recompile your kernel as described in
<URL:https://www.FreeBSD.org/handbook/kernelconfig.html> and reboot the
system.

VI.  Correction details

This issue is corrected by the corresponding Git commit hash or Subversion
revision number in the following stable and release branches:

Branch/path                             Hash                     Revision
- -------------------------------------------------------------------------
stable/13/                              e7a3a08febd0    stable/13-n255252
releng/13.2/                            e63d8b8fa6d9  releng/13.2-n254619
releng/13.1/                            bc61a15ededc  releng/13.1-n250185
stable/12/                                                        r373058
releng/12.4/                                                      r373102
- -------------------------------------------------------------------------

For FreeBSD 13 and later:

Run the following command to see which files were modified by a
particular commit:

# git show --stat <commit hash>

Or visit the following URL, replacing NNNNNN with the hash:

<URL:https://cgit.freebsd.org/src/commit/?id=NNNNNN>

To determine the commit count in a working tree (for comparison against
nNNNNNN in the table above), run:

# git rev-list --count --first-parent HEAD

For FreeBSD 12 and earlier:

Run the following command to see which files were modified by a particular
revision, replacing NNNNNN with the revision number:

# svn diff -cNNNNNN --summarize svn://svn.freebsd.org/base

Or visit the following URL, replacing NNNNNN with the revision number:

<URL:https://svnweb.freebsd.org/base?view=revision&revision=NNNNNN>

VII. References

The latest revision of this advisory is available at
<URL:https://security.FreeBSD.org/advisories/FreeBSD-EN-23:07.mpr.asc>
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